Actuating mechanism for adding-machines.



C. P. WBTMORE.

AGTUATNG MECHANISM FOR ADDING MACHINES.

APPLICATION FILED AR. 24, 1907.

9.L 0T 9E .1E H VIS OM E Nw ma t D ou ITU a D..

C. P. WETMORE.

AGTUATING MEHANISM FOR ADDING MACHINES.

APPLICATION `FILED APR. 24, 1907.

Patented Nov. 2, 1909.

3 SHEETS-SHEET 2.

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l G. P. WETMORE. AGTUATING MEGHANISM IOR ADDING MACHINES.

APPLICATION FILED APR. 24, 1907.

938,532, Patented NOV. 2, 1909.

3 SHEETS-SHEET s.

UNITED STATES 'PATENT oFFioE. f,

CHARLES P. WETMOREOF CHICAGO, vILLINOIS, ASSIGNOR TO COMPTOGBAPB'COMPNY,

A CORPORATION OFILLINOIS. l

ACTUATING MECHANISM FOR ADDING-MACHINES.

provement in Actuating Mechanism for Adding-Machines, of which the following is a specification.

My invention relates to printing yadding machines, and the particular embodiment of -it here shown is indicated as applied to the printing adding machine 'commonly known* as the comptograph, and generally shown in tne various United States patents heretofore issued to Dorr E. Felt for printing adding machines and theirmechanism, and morev particularly shown in the patent to Felt and 4Wetmore, No. 853,543, issued May 14th, 1907, andin the patent to Felt No. 644,287; and the object of my invention is to provide mechanism whereby the prime actuator may be so connected with the type positioning mechanism that the latter is rought to a positively motionless dwell, with the type in set position, before the hammer-release mechanism can possibly be actuated to the extent of releasing the typehammers.

My invention has for further objects the eifecting of such other improvements in structure and functionas may be found to obtain in the devices hereinafter described or claimed.

In the accompanying drawings forming a part of this specification, Figure 1 is a vertical sectional View lengthwise through the machine, to showv the general relations of the adding and type positioning and hammer-release mechanisms; Figs. 2 and 3 are lateral Views of the actuating mechanism and connections hereinafter more particularly described, and Fig. 2 showing the parte in normal position, while Fig. 3 shows them in the positions taken when the prime actun ator has been pulled to nearly the limit of its movement; Fig. 4 is a sectional view on line 4 4 of Fig. 2; and Fig. 5 isa sectional View on the line 5-5 of Fig. 2.

r Like reference numerals indicate like parts in all'of the figures.

20j' is one of the series of main adding-levers of the machine and performs the threefold'function of rotating the corresponding addingwheel, by means of the segment gear 21, of setting in position the type-segment- Specification of Letters Patent. Application filed April 24, 1907.v Serial No. 369,973.

Patented Nov. 2, 1909.

22, by means of the connection 23, band of setting forward the tail-piece levers 24 so that' theirv curved slots 25 will be engaged by the crossbar 26 of the comb-piece 27 when the said comb-piece is subsequently rocked downward. This forward shifting of each tail-piece lever is eected by the engagement of the tail-piece 28 withv the hooked end 29 of the aforesaid -main lever 20, so that when thev said main lever'20 is rocked upon its pivot 30 the said tail-piece and "tail-piece lever, which are secured together, will be rocked upon their'pivot 31. The movement of the aforesaid main lever 2O is effected through the main-lever connection 32 that is pivoted upon said main-lever at 33. This main-lever connection is provided at its upper end with a cam-arm 34, adapted to be in constant contact with and shifted by the cam-stud 35 on the sliding cam-bar 36, which the depression of'one or another of the keys 37, each of said keys being arranged to impinge against and shift one of the series of cams 38 that project upward from and are ,i'ntegral with the aforesaid sliding cam-bar.

The extent of the movement of the cam-bar is thus determined by the key that is depressed, and in turn determines the extent to which the cam-stud`35 shall swing back the cam-arm 34 of the pivoted main-lever connection 32; and the extent to which said short or cam-arm of said connection is swung back determines the extent to which the long or lower arm of said pivoted connection shall be swung forward. The extreme free end of said long arm of said connection 32 carries the stud 39, `and the extent to which said long arm is swung forward determines the engagement of said stud in one or another of the series of notches 40 in the forward end ofthe adding-arm 41 when the latter is rocked downward in the subsequent actuation of the machine. And the particular notch in which the aforesaidV stud happens to engage of course determines the eX- tent to which the main-lever 2O will be pulled down by its connection 32 upon the aforesaid rocking of the adding-arm 41. The adding-arm 1s secured to the main rock- 4shaft piece 42, Whose pivot end 43 projects through the wall of -the machine and is secured to the rock-shaft crank-arm 44. Thus the rocking of the said rock-shaft piece 'effects the movement of the adding-wheels latter is shifted to greater orless extent by soA embodied in a particular form of const-ruction, but I do not limit it thereto or to less than all the possible forms in which the said invention, as hereinafter claimed, may be embodied and distinguished from prior devices.

I claim 1. In an adding-machine, in combination, a primeactuator, hammer -release mechanism connected thereto, adding-mechanism, type-positioning mechanism havin a secondary actuator member actuating a l of the orders thereof, and a multiple-part connection between said prime-actuator andthe secondary-actuator of said type-positioning.

mechanism, said connection being adapted to bring the type-positioning mechanism to a positive dwell before the action of the hammer-release, substantially as specified.

2. In an adding-machine, in combination,

a prime-actuator, hammer-release mechanism, adding and type-positioning mechanism having a secondary actuator member actuating all of the orders thereof, a direct connection between said prime-actuator and said hammer-release mechanism, and an interrupted connection between said prime-actuator and the secondary-actuator of said typepositioning mechanism, the operative member of sald interrupted connection being adapted to come to'a dead-center stop before the continued movement of the primea'ctuator causes the hammer-release, substantially as specified.

3.. In an adding-machine, in combination,

a. dlrect actuator, hammer-release mechanism connected thereto, adding-mechanism, type-positioning mechanism having a secondary actuator member actuating all of the orders thereof, and a multiple-part connection between said prime-actuator and the secondary-actuator of said type-positioning mechanism, the operative member of said connection being adapted to come to a deadcenter stop While the other members continue their movement in unison with the further hammer-releasing movement of the primeactuator, substantially as specified.

In an adding-machine, a prime-actuator including an oscillating segment, hammer-release mechanism connected to said prime-actuator, adding and type-positioning mechanism including a main rock-shaft, and a multiple-part connection between said rock-shaft and the aforesaid segment, said connection consisting in a pinion meshing with'said segment and carrying an auxiliary connection-piece to which is pivoted the main connectionpiece for actuating the aforesaid rock-shaft, said main connection-piece being so pivoted to said auxiliary connection-piece that the pivot-point is brought to a dead-center stop over the axis ofthe pinion pinion has completed its movement in mesh with the segment of the prime-actuator, substantially as specified.

CHARLES hP."vvirrMoRE. Witnesses: I' v in combination,

before the said l 

